11 results
Hydroxychloroquine Serum Measurement in SLE
 • Terminal elimination half-life = 40 days ([HCQI reflects long-term intake)
Measurement in SLE ... 200ng/mL Best indications ... #rheumatology # ... pharmacology #levels ... #lupus #management
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Antinuclear Antibodies ... assay (IFA) is the main ... Using fluorescence ... ANA #patterns #rheumatology ... #diagnosis #differential
Antinuclear antibodies and Systemic lupus
Anti-dsDNA	60-80%	Association with disease activity (when with Farr assay) and lupus nephritis. Can
Antinuclear antibodies ... also be measured using ... (60-70%) & drug-induced ... erythematosus #diagnosis ... #rheumatology #
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... Differential Diagnosis ... Arthritis: • Joint pain ... activation and/or medications ... #Rheumatology
Drug Induced Systemic Lupus Erythematosus
> 100 drugs have been associated with drug-induced SLE
High risk (>5%):
 •
Lupus Erythematosus ... Erythematosus #medications ... #drugs #pharmacology ... #differential #diagnosis ... #rheumatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential Diagnosis ... lesions • Severe pain ... Immunosuppressed • New medication ... Autoimmune Vasculitis (lupus ... #physicalexam
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
such as systemic lupus ... Large Vessel: Blood ... C-ANCA) pattern: antibodies ... vasculitis, and SLE ... #rheumatology #
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... joint • Systemic lupus ... double-stranded DNA antibodies ... , and low back pain ... #testing #Rheumatology
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
erythematosus [SLE ... ) • Sepsis • Drug-induced ... Activation #Syndrome #Diagnosis ... #Management #Hematology ... #Rheumatology
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
(AHTR): Occurs during ... Rh) & recipient antibodies ... : Fever, flank pain ... #Transfusion #diagnosis ... #management #hematology